COMPREHENSIVE ASSESSMENT OF THE TROPHIC STATE INDEX OF OKACHETTY VAGU RESERVOIR, WANAPARTHY DISTRICT TELANGANA

Abstract

Water bodies globally are struggling with serious problems of degradation, that might have significant effect on economy, society, and ecosystem. From January 2024 to December 2024, Okachetty Vagu reservoir's eutrophication level has been evaluated with Carlson's Trophic State Index (TSI). Most significant markers that are essential to eutrophication process Total phosphorous (TP), chlorophyll a (Chl (a)), and water transparency have been employed to calculate eutrophication indexes. During the study period, TP concentrations peaked in May and were lowest in February. Similarly, Chl-a levels have been highest in May and declined to their lowest in January. In contrast, Secchi disc transparency peaked in May and reached its minimum in February. Carlson TSI values, ranging from 46.82-58.55, suggest that the study area predominantly exhibits mesotrophic to eutrophic conditions.